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Material Data Sheets

Butyl Rubber Gaskets Isobutylene Isoprene Rubber (IIR)

Butyl Rubber Gaskets is a recognized leading manufacturer of high quality butyl rubber gaskets, seals, and custom butyl products. Our company’s reputation for excellence has been built on our ability to provide our valued customers with the most effective designing, engineering and manufacturing solutions to meet their most demanding applications. Our main objective is to continuously exceed our customer’s expectations by providing them with high performance gaskets and sealing products, competitive pricing, on-time delivery and exceptional customer service. Custom Gasket Mfg. maintains a modern manufacturing facility along with knowledgeable, technically-oriented professionals enabling us to consistently meet all of your blueprint specifications and tolerance requirements.

Custom Gasket Mfg. has over forty years experience specializing in the manufacturing of precision die cut and molded butyl rubber gaskets and seals for a wide range of industries and applications. Butyl rubber is a copolymer of isobutylene and isoprene. It has exceptionally low gas and moisture permeability and outstanding resistance to heat aging, weather, ozone, chemical attack, flexing, abrasion and tearing. It is used in many applications requiring airtight rubber. Butyl also has excellent resistance to acids and alkalis. Butyl is not recommended for use when in contact with petroleum oils or fluids. Butyl functions well in temperatures ranging from -60°F to +250°F.